/**
 * #      697
 * 名称   数组的度
 * 链接   https://leetcode-cn.com/problems/degree-of-an-array
 * 题解   [745](https://leetcode-cn.com/problems/degree-of-an-array/solution)
 * 通过率 60.8%
 * 难道   简单
 */

